Business Laptop Battery: battery cell imbalance. One cell group reaches its voltage limit before the others.

The distinguishing clue

The percentage jumps, charging stops early or shutdown occurs with charge still reported.

Checks before an assessment

Record whether the problem occurs with the direct charger, the office dock or both. Save open work before any normal power transition.

Stop point: Protect current work before disconnecting power during battery diagnosis.

Workshop confirmation and repair

Device-level check: Compare direct charging with dock charging, review capacity and test transitions without risking open work.

Targeted check: Compare pack data and voltage behaviour across a controlled charge and discharge. If confirmed: Replace the imbalanced pack after confirming the charger is stable.

Repair boundary: Replace the supported battery and correct any dock or firmware condition that affected it.

Related cause to rule out

When runtime falls steadily and the laptop may shut down when demand increases, also consider Business Laptop Battery: worn battery cells before choosing a repair.

Checks after the work

After repair or replacement, check direct charge, dock charge, meetings workload, sleep and repeated transitions.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.